Cost me a wopping 3 bucks tops. The fabric was silicon coated ripstop nylon from the $1 bin at Wally world, the cord stop was .25$ from a fabric store. Also it might surprise you how many you can scavenge around the house, and the cord was a $1.50 I also have a small bungee in there to maintain tension that I took off one I found in the garage. Next time I will use shock cord(bungee cord) around the whole thing (.25$ per foot).

I had a lot of fun with it and a normal pack cover runs $25.00 and up.